Redundant Stacking Cable Connection - Alcatel-Lucent OmniSwitch 6450 User Manual

Stack Cabling

Redundant Stacking Cable Connection

OmniSwitch 6450 switches allow redundant stacking cable connections between the top-most and bottom-
most switches in a stack.
Note. For a stacked configuration to have effective redundancy, a redundant stacking cable must be
installed between the upper-most and bottom-most switch in the chassis at all times.
The figure below shows how the redundant connection between the top and bottom switches in the stack
ensures that data will continue to flow throughout the stack, even in the event of a connection failure at
one of the stacking cables.
Stacking Cables
Stacking Cable Redundancy: Recovery Following a Stacking Link Failure
page 6-18
Chassis Front
1
Slot 1
Slot 2
Slot 3
Slot 4
2
Slot 1
Slot 2
Slot 3
Slot 4
Managing OmniSwitch 6450 Stacks
Data enters slot 1 via an Ethernet port. The data
is passed to slot 2 over the stacking cable connec-
tion, then exits slot 2 via one of its Ethernet ports.
The stacking connection between slots 1 and 2
goes down unexpectedly. Data can no longer
travel directly between slot 1 and 2.
However, because there is a redundant con-
nection (the cable between slot 1 and slot 4),
data is immediately passed to slot 4, then
OmniSwitch 6450 Hardware Users Guide July 2012